package com.sysu.homework.DAO;

import java.util.List;

import com.sysu.homework.model.Group;
import com.sysu.homework.model.Student;

public interface GroupDAO {
	Group getGroupById(int id);

	int removeGroup(int groupId);

	int setLockToGroup(Group group);
	
	List<Student> getGroupStudentsById(int groupid);

	List<Group> getAllGroups();
}
